feat: add webhook for failed registration

[barnarddt]

Add a webhook to fire after a registration fails

Related issue(s)

#4144

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got the approval (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

At the moment this webhook just contains the same information as the Pre webhook. Could be expanded to include the strategy for example or any other information that might be usefull